Also just sharing but this did not update the SOI MGR nor the UI setting to the new EEM host.
5) Update 'SamUI\conf\jaas.config' with new EEM server host.
6) Update \SOI_HOME\tomcat\registry\topology\physical\node0\sor\eem.properties with new EEM Host.
In both those files I changed the line:
jaas.config - eiam.backend=SOI-UI01
eem.properties - eiam.backend=SOI-UI01
Saved them both and ran the registryreloader and it actually put the old eem instance name back. I then stopped it all, manually re-entered the new UI01 name saved, restarted and same thing. SOIMGR could not connect to the old EEM instance name.
So to fix this, I started up SOI-MGR and UI. Waited till the SOI Console was up and running so I logged in with samuser. Then drilled down into the EEM Configuraiton w/in the Administration Tab and entered the correct EEM hostname there. Saved it and then tested and it worked. I then again full STOP/Start and now its working.